Updated list of open-source projects.
Merge pull request #44 from dblock/oss

@dblock => Updated list of open-source projects.
Draft: Building an English Auction with MongoDB.
Merge pull request #43 from dblock/building-an-english-auction-with-mongodb

@joeyAghion => Building an English Auction with MongoDB.
Fixed post date.
Merge pull request #45 from mzikherman/source

@dblock => New blog post: notifications and personalized mails
New blog post: notifications and personalized mails
Merge pull request #46 from mzikherman/source

@mzikherman => Changing post date
Changing post date
typo after post date change
Merge pull request #47 from mzikherman/source

@mzikherman => typo after post date change